INDEPENDENCE, Ohio -- Cavaliers security officials are trying to determine if they can identify a fan who yelled a slur at Spurs guard Patty Mills during Sunday's game.

As Mills was shooting a free throw late in San Antonio's 110-94 win, a fan yelled: "Hey Jamaica called, they want their bobsledder back;" and, "Hey Mills, Jamaica just called, they want their bobsledder back."

Mills is black and from Australia with aboriginal roots.

A Twitter use shared footage of the incident to her account from ABC's broadcast of the game. There is no obvious culprit in the footage. A Cavs spokesman said team security officials were looking into it.